Which of the following hormones stimulates growth and development of female accessory sex organs and secondary sex character and also female sexual behaviour ?

Options

A. Estrogen
B. Progesteron
C. Androgen (Testosterone)
D. Gonadotrophic releasing hormone

Answer

To solve the question regarding which hormone stimulates the growth and development of female accessory sex organs, secondary sex characteristics, and female sexual behavior, we need to analyze the options provided.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a hormone that is responsible for the growth and development of female accessory sex organs, secondary sexual characteristics, and female sexual behavior.

2. **Identifying the Hormones**: The options provided include:
- Option 1: Estrogen
- Option 2: Progesterone
- Option 3: Androgens
- Option 4: Gonadotropic Releasing Hormone (GnRH)

3. **Analyzing Each Option**:
- **Option 1: Estrogen**: This is a primary female hormone that plays a crucial role in the development of female secondary sexual characteristics, such as breast development and the regulation of the menstrual cycle. It is secreted by the growing follicles in the ovaries.
- **Option 2: Progesterone**: This hormone is primarily involved in preparing the uterus for pregnancy and maintaining the endometrium. It does not directly stimulate the development of secondary sexual characteristics or female sexual behavior.
- **Option 3: Androgens**: These are male hormones (like testosterone) that are not primarily responsible for female characteristics. They are involved in male secondary sexual characteristics and behaviors.
- **Option 4: Gonadotropic Releasing Hormone (GnRH)**: This hormone is secreted by the hypothalamus and stimulates the anterior pituitary to release FSH and LH. While it plays a role in the reproductive hormone cascade, it does not directly stimulate the growth of female accessory sex organs or secondary sexual characteristics.

4. **Conclusion**: Based on the analysis, the hormone that stimulates the growth and development of female accessory sex organs, secondary sex characteristics, and female sexual behavior is **Estrogen** (Option 1).

### Final Answer:
**Estrogen (Option 1)**

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